News from the heroic adventurers who challenge Icecrown has been hushed this week, but investigations have revealed that a group of 25 heroic people from Alternate Reality have defeated Deathbringer Saurfang so that only Lady Deathwhisper now remains in the Lower Spire. A group of 25 heroic raiders from Wrath have also been sneaking around, killing Professor Putricide and clearing out the Plagueworks.
A heroic group of 10 from CakeFM have also made some progress after beginning their foray into the Lower Spire, although they have not yet cleared the wing.

Current 25H Spire Clears (in their entirety)
2 0
Current 25H Plaguework Clears
0 1

In the regular version of Icecrown Citadel a group of 25 from Endless have defeated Professor Putricide and begun their assault on the Crimson Halls. Groups of 10 have also been challenging the undead inhabitants, with Veneratio defeating the Blood Princes and their Blood-Queen. The other ten invaders, Sabotage, have seemingly lived up to their name after sweeping through the Lower Spire in its entirety, defeating Rotface and Festergut within the Plagueworks, freeing Valithria from the Frostwing Halls, and moving on to kill numerous things in Ulduar that I don't keep a tally of.

Current 25 Man Plaguework Clears
11 4
Current 10 Man Spire Clears
21 10
Current 10 Man Crimson Hall Clears
14 8